问题
选择题
_________ that he had fallen behind,he tried to work harder.
A．Having realized
B．Realized
C．Realize
D．To realize
答案
A
分词的完成式作状语，强调动作在句子的动作前发生。
搜题请搜索小程序“爱下问搜题”
_________ that he had fallen behind,he tried to work harder.
A．Having realized
B．Realized
C．Realize
D．To realize
A
分词的完成式作状语，强调动作在句子的动作前发生。